Marine oil-water separation equipment

Abstract

The utility model relates to oil-water separation equipment for a ship, relates to the technical field of separation and filtration, and aims to solve the problem that existing oily sewage treatment is difficult to meet the standard, the oil-water separation equipment comprises a first separation barrel and a second separation barrel, and a water inlet pipe is arranged at the top of the first separation barrel; the bottom of the first separation barrel is provided with a separation pipe used for being communicated with the second separation barrel, the bottom of the second separation barrel is provided with a water outlet pipe, one side of the first separation barrel is provided with an oil collection cabin used for collecting oil, and the oil collection cabin is provided with an oil collection pipe used for being communicated with the top of the first separation barrel and the top of the second separation barrel. A coagulation device for coagulation of oil particles is arranged in the second separation cylinder, and a filtering assembly for filtering impurities and particles is arranged at the bottom of the second separation cylinder. The device has the advantages that it is ensured that the treated water quality reaches the discharge standard, the device is compact in structure and small in occupied space, installation and use on a ship are facilitated, and the actual requirements of ship operation are met.

Description

Technical Field

[0001] This application relates to the field of separation and filtration technology, and in particular to a marine oil-water separation device. Background Technology

[0002] As the primary means of maritime transportation, the safe, environmentally friendly, and efficient operation of ships is crucial for global trade and marine environmental protection. During ship operation, a large amount of oily wastewater is generated, mainly from the ship's fuel system, lubrication system, cooling system, and bilge water. Direct discharge without effective treatment will cause serious pollution and damage to the marine ecosystem. Therefore, the International Maritime Organization (IMO) and national governments have established strict regulations and standards requiring ships to install effective oil-water separation equipment to ensure that oily wastewater is discharged in compliance with standards.

[0003] However, in practical applications, oily wastewater from ships often contains fine oil droplets and suspended solids, which increase the difficulty of oil-water separation. Although traditional gravity separation methods are simple, they have low separation efficiency and are difficult to meet strict emission standards. Utility Model Content

[0004] To address the problem that existing oily wastewater treatment methods fail to meet standards, this application provides a marine oil-water separation device.

[0005] The marine oil-water separation device provided in this application adopts the following technical solution:

[0006] A marine oil-water separation device includes a first separation cylinder and a second separation cylinder. The first separation cylinder has an inlet pipe at its top and a separation pipe at its bottom for connecting to the second separation cylinder. The second separation cylinder has an outlet pipe at its bottom. An oil collection tank for collecting oil is provided on one side of the first separation cylinder. An oil collection pipe for connecting to the top of the first and second separation cylinders is provided on the oil collection tank. A coagulant for oil droplet coagulation is provided inside the second separation cylinder. A filter assembly for filtering impurities and particles is provided at the bottom of the second separation cylinder.

[0007] In practical applications, ship oily wastewater often contains fine oil droplets and suspended solids, which increases the difficulty of oil-water separation. Although traditional gravity separation methods are simple, their separation efficiency is low and they cannot meet strict emission standards. By adopting the above-mentioned technical solution, including a first separation cylinder and a second separation cylinder, the first and second separation cylinders are connected by a separation pipe. The oil collection tank is connected to the top of the first and second separation cylinders through an oil collection pipe. A condenser is installed inside the second separation cylinder, and a filter assembly is installed at the bottom of the second separation cylinder.

[0008] When treating oily wastewater from ships, the oily wastewater enters the first separation tank through the inlet pipe. Inside the first separation tank, due to the density difference between oil and water, most of the oil and water begin to separate initially. The heavier wastewater sinks, while the lighter oil droplets float or remain suspended. The floating or suspended oil droplets are collected in the oil collection tank through the oil collection pipe. The wastewater that has undergone initial separation enters the second separation tank through the separation pipe. Inside the second separation tank, a coagulant is installed to coagulate tiny oil particles into larger oil droplets (promoting the aggregation and floating of oil droplets through physical methods such as adsorption and collision). The coagulated oil droplets are more likely to float and separate from the water. At the same time, the filter assembly at the bottom of the second separation tank is used to filter out impurities and particles in the wastewater, further improving the water quality. The oil concentration of the treated wastewater should be significantly reduced to meet the discharge standards, and then it can be safely discharged into the external environment through the outlet pipe.

[0009] The equipment, consisting of a first separation cylinder, a second separation cylinder, a coagulant, and a filter assembly, utilizes the principle of oil-water density difference. Initial oil-water separation is achieved in the first separation cylinder, effectively removing most of the floating oil. The coagulant in the second separation cylinder uses physical methods (such as adsorption and collision) to agglomerate tiny oil particles into larger droplets, further improving the efficiency of oil-water separation. The filter assembly removes impurities and particles from the wastewater, ensuring that the treated water meets discharge standards. The equipment employs physical separation methods, eliminating the need for chemical additives and avoiding secondary pollution. Furthermore, its compact structure and small footprint make it easy to install and use on ships. It is suitable for treating various types of oily wastewater, including bilge water and ballast water, to meet the actual needs of ship operations.

[0010] Optionally, the filtration assembly includes a filter housing and a filter element. The filter housing is arranged at the opening at the bottom of the second separation cylinder. The filter housing has a hollow structure inside. The filter element is detachably arranged inside the filter housing and is filled with a filter medium.

[0011] By adopting the above technical solution, the filter assembly includes a filter shell and a filter element, with the filter element filled with filter media. The filter assembly, consisting of a filter shell and a filter element, effectively intercepts and removes fine particles, suspended solids, and some dissolved organic matter from wastewater, significantly improving water purity. Furthermore, the filter element is designed to be detachable, allowing operators to easily remove and replace it without disassembling the entire filter assembly, greatly reducing maintenance difficulty and cost. The filter media inside the filter element can be replaced and adjusted according to actual needs, adapting to different types of oily wastewater treatment requirements and enhancing the equipment's flexibility and applicability.

[0012] Optionally, the filter element is provided with a support frame for preventing deformation. The support frame is detachably installed inside the filter housing, and the filter element is arranged on the support frame.

[0013] By adopting the above technical solution, the filter element is installed on the filter housing through the support frame. The support frame provides additional support for the filter element, effectively preventing the filter element from deforming or being damaged under high pressure or high speed water flow. This ensures that the filter element can maintain its filtration efficiency and performance for a long time, which helps to extend the service life of the filter element and reduce the replacement frequency and cost.

[0014] Optionally, the support frame is provided with an O-ring for sealing, and the O-ring is arranged in the gap between the support frame and the filter element.

[0015] By adopting the above technical solution, the O-ring is installed in the gap between the support frame and the filter element. Through the setting of the O-ring, a tight seal can be formed between the support frame and the filter element, effectively preventing sewage from leaking from the gap, ensuring the stability of pressure and flow inside the filter assembly, thereby improving the overall filtration effect. At the same time, it can also enhance the connection stability between the support frame and the filter element to a certain extent, reducing the risk of loosening or displacement caused by water flow impact or vibration.

[0016] Optionally, a diffusion nozzle is provided at the outlet of the water inlet pipe, and the diffusion nozzle is arranged inside the first separation cylinder.

[0017] By adopting the above technical solution, the diffusion nozzle is installed at the outlet of the inlet pipe. Through the setting of the diffusion nozzle, the oily wastewater entering the first separation cylinder can be diffused and atomized, so that the water flow is distributed in the cylinder in a wider and more uniform manner, which helps to increase the contact area between oil droplets and water flow, promote the floating and separation of oil droplets, and thus improve the overall oil-water separation efficiency.

[0018] Optionally, a flange for installation is provided at the connection between the diffuser nozzle and the water inlet pipe, and fixing bolts are provided on the flange.

[0019] By adopting the above technical solution, the diffuser nozzle and the water inlet pipe are installed through a flange and fixed with fixing bolts. The flange and fixing bolts simplify the installation process, ensure a tight connection between the diffuser nozzle and the water inlet pipe, facilitate maintenance, and reduce maintenance difficulty.

[0020] Optionally, the inlet pipe is equipped with a flow regulating valve for adjusting the flow rate, and both the outlet pipe and the oil collecting pipe are equipped with a stop valve for preventing backflow.

[0021] By adopting the above technical solution, a flow regulating valve is installed on the inlet pipe, and a stop valve is installed on the outlet pipe and the oil collection pipe. Through the setting of the flow regulating valve and the stop valve, the flow regulating valve can accurately control the amount of sewage entering the oil-water separator, ensuring that the equipment operates under optimal treatment conditions, which helps to optimize the treatment efficiency of the equipment and avoid overload operation or insufficient treatment. At the same time, the stop valves on the outlet pipe and the oil collection pipe can effectively prevent treated sewage or recovered oil from flowing back into the equipment, avoiding pollution to the equipment. It can also ensure that sewage and oil will not accidentally flow into or out of the equipment during equipment shutdown or maintenance, protecting the safety and integrity of the equipment.

[0022] Optionally, the first separator is also equipped with a pressure gauge for monitoring changes in internal pressure.

[0023] By adopting the above technical solution, a pressure gauge is installed on the first separation cylinder. Through the setting of the pressure gauge, the pressure gauge can display the pressure inside the first separation cylinder in real time, so that the operator can keep track of the working pressure status of the equipment at any time, which helps to detect and deal with any abnormal pressure changes in a timely manner and ensure the stable operation of the equipment.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] The equipment, consisting of a first separation cylinder, a second separation cylinder, a coagulant, and a filter assembly, utilizes the principle of oil-water density difference. Initial oil-water separation is achieved in the first separation cylinder, effectively removing most of the floating oil. The coagulant in the second separation cylinder uses physical methods (such as adsorption and collision) to agglomerate tiny oil particles into larger droplets, further improving the efficiency of oil-water separation. The filter assembly removes impurities and particles from the wastewater, ensuring that the treated water meets discharge standards. The equipment employs a physical separation method, eliminating the need for chemical additives and avoiding secondary pollution. Furthermore, its compact structure and small footprint make it easy to install and use on ships. It is suitable for treating various types of oily wastewater, including bilge water and ballast water, to meet the actual needs of ship operations.

[0026] The filter assembly consists of a filter housing and a filter element. The filter element is filled with filter media, which can effectively intercept and remove tiny particles, suspended solids, and some dissolved organic matter in wastewater, thereby significantly improving the purity of the water. The filter element is designed to be detachable, allowing operators to easily remove and replace it without disassembling the entire filter assembly, greatly reducing the difficulty and cost of maintenance. Furthermore, the filter media inside the filter element can be replaced and adjusted according to actual needs, adapting to different types of oily wastewater treatment requirements and enhancing the flexibility and applicability of the equipment.

[0027] By setting up diffusion nozzles, the oily wastewater entering the first separation cylinder can be diffused and atomized, so that the water flow is distributed more widely and evenly in the cylinder. This helps to increase the contact area between oil droplets and water flow, promote the floating and separation of oil droplets, and thus improve the overall oil-water separation efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a marine oil-water separation device according to an embodiment of this application.

[0029] Figure 2 This is a partial cross-sectional view in the embodiments of this application used to illustrate the internal structure of the first and second separation cylinders.

[0030] Figure 3 yes Figure 2 Enlarged view of section A.

[0031] Figure 4 yes Figure 2 Enlarged view of section B.

[0032] Explanation of reference numerals in the attached drawings: 1. First separation cylinder; 2. Second separation cylinder; 3. Inlet pipe; 31. Flow regulating valve; 4. Separation pipe; 41. Stop valve; 5. Outlet pipe; 6. Oil collection tank; 7. Oil collection pipe; 8. Coagulant; 9. Filter assembly; 901. Filter housing; 902. Filter element; 10. Support frame; 11. O-ring seal; 12. Diffuser nozzle; 13. Flange; 14. Fixing bolt; 15. Pressure gauge. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a marine oil-water separation device. (Refer to...) Figure 1 The marine oil-water separation equipment includes a first separation cylinder 1 and a second separation cylinder 2. In this embodiment, both the first separation cylinder 1 and the second separation cylinder 2 are cylindrical and have a hollow interior. The first separation cylinder 1 and the second separation cylinder 2 can be installed on a ship.

[0035] Reference Figure 1 and Figure 2 A pressure gauge 15 is installed on the first separation cylinder 1. The pressure gauge 15 can display the pressure inside the first separation cylinder 1 in real time, so that the operator can keep track of the working pressure status of the equipment at any time, which helps to detect and deal with any abnormal pressure changes in a timely manner and ensure the stable operation of the equipment.

[0036] Reference Figure 1 and Figure 3The first separation cylinder 1 is equipped with a water inlet pipe 3 at the top. The water inlet pipe 3 is used to introduce oily wastewater into the first separation cylinder 1. A diffusion nozzle 12 is installed at the outlet of the water inlet pipe 3. The diffusion nozzle 12 is equipped with multiple outlets. In this embodiment, the diffusion nozzle 12 is arranged inside the first separation cylinder 1. The diffusion nozzle 12 can diffuse and atomize the oily wastewater entering the first separation cylinder 1, so that the water flow is distributed in a wider and more uniform manner in the cylinder. This helps to increase the contact area between oil droplets and water flow, promote the floating and separation of oil droplets, and thus improve the overall oil-water separation efficiency.

[0037] Reference Figure 1 A flow regulating valve 31 is installed on the inlet pipe 3. In this embodiment, the flow regulating valve 31 is used to regulate the sewage flow. The flow regulating valve 31 can accurately control the amount of sewage entering the oil-water separation equipment, ensuring that the equipment operates under the best treatment conditions, which helps to optimize the treatment efficiency of the equipment and avoid overload operation or insufficient treatment.

[0038] Reference Figure 1 and Figure 3 A flange 13 is installed at the connection between the diffuser nozzle 12 and the water inlet pipe 3. In this embodiment, there are two flanges 13. The two flanges 13 are welded and fixed to the outside of the diffuser nozzle and the water inlet pipe 3 respectively. The two flanges 13 are fitted together, and several fixing bolts 14 are installed on the two flanges 13. This simplifies the installation process, ensures a tight connection between the diffuser nozzle 12 and the water inlet pipe 3, and facilitates maintenance, reducing the difficulty of maintenance.

[0039] Reference Figure 1 and Figure 2 A separation tube 4 is installed between the first separation cylinder 1 and the second separation cylinder 2. One end of the separation tube 4 is connected to the bottom of the first separation cylinder 1, and the other end of the separation tube 4 is connected to the inside of the second separation cylinder 2. At the same time, a coagulant 8 is installed inside the second separation cylinder 2. In this embodiment, the coagulant 8 consists of a corrosion-resistant and high-strength shell, a specially designed coagulation medium (such as fiber material, porous ceramic, etc.), a stable support structure, and a port that facilitates fluid entry and exit. Its working principle is based on the adsorption effect that causes tiny oil particles to accumulate on the surface of the coagulation medium to form larger oil droplets, and further increases the volume of oil droplets through collision and coalescence. Finally, the effective separation of oil droplets and water is achieved by gravity sedimentation or a specific separation device.

[0040] Reference Figure 1 An oil collection tank 6 is installed on one side of the first separation cylinder 1. In this embodiment, the oil collection tank 6 can be installed inside the ship. An oil collection pipe 7 is connected to the oil collection tank 6. The oil collection pipe 7 is connected to the top of the first separation cylinder 1 and the second separation cylinder 2 respectively. The floating or suspended oil droplets are collected into the oil collection tank 6 through the oil collection pipe 7.

[0041] Reference Figure 1Both the oil collection pipe 7 and the water outlet pipe 5 are equipped with water stop valves 41. The water stop valves 41 on the water outlet pipe 5 and the oil collection pipe 7 can effectively prevent the treated sewage or recovered oil from flowing back into the equipment, avoiding pollution to the equipment. At the same time, they can ensure that sewage and oil will not accidentally flow into or out of the equipment during equipment shutdown or maintenance, protecting the safety and integrity of the equipment.

[0042] Reference Figure 1 and Figure 4 The bottom of the second separation cylinder 2 is connected to a water outlet pipe 5, which is used to discharge the treated sewage. At the same time, a filter assembly 9 is installed at the opening at the bottom of the second separation cylinder 2. The filter assembly 9 includes a filter shell 901 and a filter element 902. The filter shell 901 is installed at the bottom opening of the second separation cylinder 2. In this embodiment, the filter shell 901 has a hollow structure inside.

[0043] Reference Figure 4 The filter housing 901 has a support frame 10 installed inside. The support frame 10 can be detachably installed on the filter housing 901. In this embodiment, the support frame 10 can be threaded onto the filter housing 901. The filter element 902 is installed inside the support frame 10 and is filled with filter media. The support frame 10 provides additional support for the filter element 902, effectively preventing the filter element 902 from deforming or being damaged under high pressure or high speed water flow. This ensures that the filter element 902 can maintain its filtration efficiency and performance for a long time, which helps to extend the service life of the filter element 902 and reduce the replacement frequency and cost.

[0044] Reference Figure 4 An O-ring 11 is installed at the gap between the support frame 10 and the filter element 902. The O-ring 11 can be made of rubber material. The O-ring 11 can form a tight seal between the support frame 10 and the filter element 902, effectively preventing sewage from leaking from the gap, ensuring the stability of pressure and flow inside the filter assembly 9, thereby improving the overall filtration effect. At the same time, it can also enhance the connection stability between the support frame 10 and the filter element 902 to a certain extent, reducing the risk of loosening or displacement caused by water flow impact or vibration.

[0045] The implementation principle of a marine oil-water separation device according to an embodiment of this application is as follows: When treating oily wastewater from a ship, the oily wastewater enters the first separation cylinder 1 through the inlet pipe 3. In the first separation cylinder 1, due to the density difference between oil and water, most of the oil and water begin to separate initially. The heavier wastewater sinks, while the lighter oil droplets float or suspend. The floating or suspended oil droplets are collected in the oil collection tank 6 through the oil collection pipe 7. The wastewater that has undergone initial separation enters the second separation cylinder 2 through the separation pipe 4. In the second separation cylinder 2, a coagulant 8 is installed to coagulate the tiny oil particles into larger oil droplets (by physical methods such as adsorption and collision, the aggregation of oil particles is promoted and they float). The coagulated oil droplets are easier to float and separate from the water. At the same time, the filter component 9 at the bottom of the second separation cylinder 2 is used to filter out impurities and particles in the wastewater, further improving the water quality. The oil concentration of the treated wastewater should be significantly reduced to meet the discharge standards, and then it can be safely discharged to the external environment through the outlet pipe 5.

[0046] The equipment, consisting of a first separation cylinder 1, a second separation cylinder 2, a coagulant 8, and a filter assembly 9, utilizes the principle of oil-water density difference. Initial oil-water separation is achieved in the first separation cylinder 1, effectively removing most of the floating oil. The coagulant 8 in the second separation cylinder 2 uses physical methods (such as adsorption and collision) to agglomerate tiny oil particles into larger droplets, further improving the efficiency of oil-water separation. The filter assembly 9 removes impurities and particles from the wastewater, ensuring that the treated water meets discharge standards. The equipment employs a physical separation method, eliminating the need for chemical additives and avoiding secondary pollution. Furthermore, its compact structure and small footprint make it easy to install and use on ships. It is suitable for treating various types of oily wastewater, including bilge water and ballast water, to meet the actual needs of ship operations.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A marine oil-water separation device, characterized in that: The system includes a first separation cylinder and a second separation cylinder. The first separation cylinder has a water inlet pipe at its top and a separation pipe at its bottom for connecting to the second separation cylinder. The second separation cylinder has a water outlet pipe at its bottom. An oil collection chamber for collecting oil is provided on one side of the first separation cylinder. An oil collection pipe for connecting to the top of the first and second separation cylinders is provided on the oil collection chamber. A coagulant for oil droplet coagulation is provided inside the second separation cylinder. A filter assembly for filtering impurities and particles is provided at the bottom of the second separation cylinder.

2. The marine oil-water separation device according to claim 1, characterized in that: The filtration assembly includes a filter housing and a filter element. The filter housing is located at the opening at the bottom of the second separation cylinder. The filter housing has a hollow structure inside. The filter element is detachably arranged inside the filter housing and is filled with a filter medium.

3. The marine oil-water separation device according to claim 2, characterized in that: The filter element is provided with a support frame for preventing deformation. The support frame is detachably installed inside the filter housing, and the filter element is arranged on the support frame.

4. The marine oil-water separation device according to claim 3, characterized in that: The support frame is provided with an O-ring for sealing, and the O-ring is arranged in the gap between the support frame and the filter element.

5. A marine oil-water separation device according to claim 1, characterized in that: A diffusion nozzle is provided at the outlet of the water inlet pipe, and the diffusion nozzle is arranged inside the first separation cylinder.

6. A marine oil-water separation device according to claim 5, characterized in that: A flange for installation is provided at the connection between the diffuser nozzle and the water inlet pipe, and fixing bolts are provided on the flange.

7. A marine oil-water separation device according to claim 1, characterized in that: The inlet pipe is equipped with a flow regulating valve for adjusting the flow rate, and both the outlet pipe and the oil collecting pipe are equipped with a stop valve for preventing backflow.

8. A marine oil-water separation device according to claim 1, characterized in that: The first separator is also equipped with a pressure gauge for monitoring internal pressure changes.

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